Glass feeder



.20 Figure 2 is a horizontal sectional view of Patented 'Apr'. 18, 1933l .UNITI-:nA lSTATES PATENT ol-Fica DVID STENHOUSE, OF WASHINGTON,PENNSYLVANIA, .ASSIGNOR T0 HAZEL-ATLAS GLASS C0., Ol' WHEELING, WESTVIRGINIA, A CORPORATION 0F WEST VIRGINIA.

GLASS FEEDER Application led April 25, 1930. Serial No. 447,387. K

The invention relates to means for feeding glass to molds for thefabrication of glass articles, by alternately increasing and decreasv inthe air pressure on the glass. Devices of thls type have been known formany years, and the objects of the present invention are to generallysimplify and otherwise improve the construction and operation of suchfeeders.

The advantages of the device wi ll be apparent from the followingdetailed description, when taken inconnection with the accompanyingdrawing; in which Figure v1 is a perspective view of the feeder mountedin place in a conventional flow spout; parts of the feeder being brokenaway to more clearly show the construct1on, and a portion of the iowspout being shown in section.

the vacuum and pressure tube and its asso-4 iated throttle bushing,taken on line 2-2 of i 1. igure 3 is a vertical sectional view of theupper portion of the vacuum and pressure til-lire, and its opprratingmechanism; and

igure 4 is a agmentary perspectlve v1ew of the vacuum and pressure tubeand throttle bushing. A g Referring to the drawing more in detail,

numeral f1 indicates a conventional ilow spout having the `usual ilo/worifice 2 and orifice bushing 3. v

Fitted in the flow orifice is a throttle bushl 4, which projects upwardinto the glas:x

and has a portion of its wall cut awa lto form an opening 5. Thevolume'ilowo Athe glass, and hence the weight of the charges, isregulated by the relative angular adjustment 4 of the vacuum andpressure tube and this throttle bushing; the charges, after beingsevered by the shears 6, drop mto the molds (not shown), t

The pressure and vacuum tube, which is indicated by numeral 7, extendsdownwardly through an opening 8 in the roof of the flow spout and itslower end projects through'the .v glass to a point adjacent the door ofthe 'How spout. A portionof the wall of the tube is cut 5 away at thelower end, to form an opening 9.(

j ing a depending flange 18', is threaded into When the openings 9 and 5align glass flows therethrough into the interior of the tube, and thevolume of lass iiowing therein is regulated by rotataly adjustin theextent of alignment of the openings. Vhen there is complete alignmentglass flows into the tube at a maximum volume, and the volume is reducedand regulated to |the desired amount by rotatably adjusting the vacuumand pressure tube 7. The mechanism by which this tube is mounted, androtatably adjusted, will now be described. Numeral 10 indicates ametallic bracket which is attached to some convenient part of the flowspout. Bolted -or otherwise secured to this bracket is a holder 12 whichhas an annular portion 13 provided with an inturned liange 14 atitslower edge. A .ring v 15, havingv an -inturned flange 16, fits withinthe annu fia-nge 14. A

The upper' end of the tube 7 has an outwardly extending flange 17, whichrests upon the inturned ange 16 of ring 15, whereby the tubeissupported. Annular member 18, havr member 13 and rests upon the thering 15; the depending flange forcing the packing 19 into place to forman airtight seal between the tube 7 and thering 15. The flange 17 of thetube is clamped to the liange 16 of the ring 15, by means of clampingscrews 18, which are threaded throughthe annular member 18, intoengagement with the top of the tube. vA cap 20 is bolted to the annularmember, and a pipe 21 is mounted in the 85 cap, centrally of the tube 7.Itis through this pipe that air under pressure is alternately introducedinto the tube and withdrawn therefrom, to alternatelycompress and rarefythe air in the tube, thereby increasing and del creasing the` pressureon the glass. An air tight connection between cap 20and pipe 21 isprovided by means of the packing l 21 which is forced into place by thenut 21" which embraces the pipe and is in threaded 95 engagement withthe cap.

" A shaft 22 is journaled in lugs 23, 23, projecting from the annularportion of the holder; and this shaft carries a worm 24 which projectsthrough an opening 25 in the holder.- 10

\ low normal atmospheric pressure.

into engagement with teeth 26 formed on the lring 15. By rotating theshaft 22 and its -su ported.

n operation, air under pressure from any appropriate source, isintroduced through the pipe 21 into the tube 7. The pressure on the lassis thereby increased, thus increasing the ow of glass ove'l` the normalgravity flow. At the desired instant the pressure through the pipe-21 isshut off,'and the pipe is connected with a source of vacuum; thepressure in the tube 7 being thereby reduced to or be- The reduction ofpressure may be such as to retard the flow of glass, or stop the flow orreverse the direction of flow. The charges are severed at the desiredtime, and drop into the molds. To change and regulate the weight ofthese char es, it 1s only' necessary to rotatethe l tube 7 in t edesired direction and to the desired extent, to thereby increase ordecrease the: degree of alignment of the openings 5 an 9.

` It has been deemed unnecessary to illustrate any particular mechanismfor controlling the appllcation of pressure and vacuum to the tube,mechanism for operating the shears, etc.; for any desired mechanism maybe employed. Mechanism for these purposes are of common knowledge in theglass industry,

having been knowncforvmany years,and are in common use.

What I claim as new is: 1. A pneumatic glass feeder, includin a flowspout having a flow orifice, a rotataily adjustable vacuum and pressuretube projecting into the flow spout in alignment with the flow orifice,and means associated with the lower portion of the tube to vary thevolume of glass flowing through the flow orifice as the tube isrotatably adjusted.

2. A pneumatic glass feeder, including a flow spout having a floworifice, a vacuum and pressure tube projectin into the flow spout inalignment with the ow orifice, said tube being rotatably adjustable,means associated with the lower portion of the tube to regulate thevolume of glass flowing through the flow orifice as the tube isrotatably adjuisted, and means for rotatably adjusting the tu 3. Apneumatic glass feeder, including a flow spout havilg a. flow orifice, athrottle bushing arrange in said orifice and projecting upwardly intothe glass, a vacuum and 'vacuum and pressuretube lower portion of thetube to re pressure tube pro'ecting downwardl into the flow spout anembracing'said t rottle bushing, said tube and bushing being relativelyadjustable rotatably to regulate the volume of glass flowing through theflow orifice.

4. A pneumatic glass feeder, including a fiow spout having a fioworifice, a throttle bushing arranged in `said orifice and projectingupwardly into the glass, the throttle bushing having an opening in 'itsside to permit the glass to flow into the interior thereof, a

projecting downwardly into the glass an embracing the throttle bushing,the tubeand bushing being rotatably adjustable relatively,- to regulatethe volume of glass flowing ough the `flow orifice.

5. A pneumatic glass feeder, including a flow spout having a floworifice, a throttle bushing arranged in said orifice and vprojectingupwardly into the glass, the throttle bushing having an openin in ltsside to permit the glass to flow into t e interior thereof, a vacuum andpressure tube rojecting downwardly into `the glass an embraclng thethrottle bushing, said tube having an opening in its side adapted torotatably align more or less with the opening in the side of thethrottle bushing, and means to rotatably adjust the tube to regulatethe' degree of alignment between the two openin 6. A pneumatic glassfeer, including a flow spout having a iow orifice, Ia vacuum andplressure tube projecting downwardl into t e glass in ah ent with theflow orlfice, a flange forme on the upper end offthe' tube, a ringin'which said flange is mounted means/for clamping together the ring andflange, 1teeth formed on the exterior lof the ring, means engaging theteeth to rotatably adj ust the tube, and means associated with the latethe volume o as the tube is rotatably'adjusted.

7. A pneumatic glass feeder, including a flow spout having a ow orifice,a vacuum and pressure tube projecting downwardly into theV glass inalignment with the flow` orifice, a iiange formed on the upper end ofthe tube, a ring in which said flange is mounted, means for clampingtogether the ring and flange, teeth formed on the exterior of the ring,means enga g the teeth to rotatably adjust the tube, t ottling meansassociated. with the lower end of the tube, said throttling meansprovided with a lateral opening, the

lower end of the tube provided with a' lateral opening, the two lateralopenings being caused to registerto the ldesired degree by saidadjustment ofthe tube.,

flow spout having a flow orifice, a vacuum and pressure tube projectingdownwardly into the glass in alignment with the flow orifice,

8. A pneumatic glass feeder, including a` means for rotatably adjustingsaid tube, the lower portion of said tube provided with a lateralopening, and means associated with said opening to vary the effectivesize therel of when the tube is rotatably adjusted.

9. A pneumatic glass feeder, including a flow spout having a floworifice, a vacuum and pressure tube projecting downwardl into the glassin alignment with the flow on- .fice, the lower porticn of said tubeprovidedA with a lateral opening, an arcuate bushing or wall associatedwith the lower portion of the tube, said arcuate bushing or wall havinga lateral opening, and means to relatively adjust the tube and bushingto vary the degree to which said openings register.

DAVID STENHOUSE.

